Territory



(No llvodel.)

N. 0. SWENSON.

TUYERB FOR FORGES.

No. 283,435. Patented 'Aug.-21,'1883.i

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Wz'neames Nrlrn 'rares PATENT rricn.

TUYERE FOR FORGES.

SPEQIFICA'IIKONforming partk of Letters Patent No. 283,435, dated August21, Application iled Novenher 10, 1832. V(No model.)

` the air-blast that the full force of air may be concentrated at thecenter of the fire or in several directionscrosswise ofthe lire, as maybe required for different Work.

Reference being had to the accompanying drawings, forming part of thisspecification, in which similar letters of reference indicatecorresponding parts in all the figures, Figure l is a sectional sideelevation. Fig. 2 is aplan; Fig. 3 is a iront elevation, showing indotted lines the cover or door H for the air-box as when open. Fig. 4 isan inverted plan of the regulator.

A represents the concave face-plate of the tuyere. -In the center ofsaid face-plate A is formed a large opening, B, surroundedby fourequidistant smaller openings, C. Beneath the face-plate A isa formed theair-box D, having an inlet-pipe, G. The faceplate A is formed somewhatin the shape of a concaved boro.

cover having a flange which completely surrounds its sides and restsupon the top of the air-box D, and by means of this construction anairchamber, c, is formed between the face plate A and the top ofair-.box D, therehypreventing any damage to said air-box D fromoverheating the 'face-plate A. In the top of the air-box D are formedvertical air-passages E F, the upper ends of which are connected withthe openings B C in the face-plate A, While the lowerends connect withthe openings in the regulator, to be hereinafter clearly described.

Vith the outer end of the inlet-pipe G is designed to be connected apipe leading from a bellows or blower supplying the air to the forge. l

Access may be had tothe inside of the airbox D at any time by sliding toeither side the cover H, for the purpose of clearing it from any ashes,small particles of coal, or cinders that may fall through theair-passages from the top of face-plate A.

Projecting horizontally from the uppermost part of the sides of theair-boxD are flatlugs d, which are designed to rest upon and hold thetuyere suspended between au iron franie- Work or the bricleworkcomposing va forge.

AUpon the sides of the face-plate A are lugs a.,

will be riveted'to the sides of the air-box D underneath the regulatorI, for the purpose of preventing said regulator froin falling too low inthe air-box, and also preventing the regulator from being rotated toofar either to the right or to the left by means of contact with v thelugs M. The central projection on the lower side of the regulator I, asshown inFigs.

l and 4, is provided with a small hole for the reception of a pivot intheinner end of the supportingdever O, hinged at l? tothe air-box D, atwhich point' an opening is provided through which it passes. The outerend of lever O is held down by either a spring ora Weight, Q, as shownin Fig. l, thereby exert- .ing a 'continua-l upward pressure upon theinner end of said lever O, which forces the regulatingplate I againstthelower projecting ends of the pipes E F. f

For large forges these tuyeres will be constructed larger than for smallones, and the passages B G, E F, and .I K will also be proportionatelylarger. It may become necessary, therefore, in the larger sizes oftuyeres, to provide some form of sieve for the said air-passages B- C, EF, or J K, in order to prevent large pieces of coal from droppingthrough into the air-box D.

In the regulator I, upon the opposite sides of the center openings, J,are formed four smaller openings, K, (two on a side,) corresponding insize with the four air-pipes F, and separated from each other a distanceequal to the diameters of one of the airpipes F multi plied by three,more orless,) as shown in Fig.

IOO

4. The two elongated openings L in the regulator I (also shown in, Fig.4) are so placed on the opposite sides of center opening, J, and betweenthe openings K as will enable the air to pass from the air-box up andthrough all of the air-pipes E F at the same time, and by pushing therod R the regulator may be rotated, and thereby admit the air to but twoof the air-pipes F; or the regulator. I may be so rotated as to preventthe air from entering any of the pipes F, the center air-pipe being atall times open.

Having fully described my invention, I claim- 1. An air-tuyereconstructed substantially `as herein shown and described, andconsisting,`

of a face-plate,-A, having vertical air-passages B C, connected withair-passagesE F, formed in the top of air-box D, inlet-pipe G, andsliding door H, the passage of air through any except the centralopening being at all times wholly under control by means of theregulator I, provided with openings J K, which may be readily connectedwith passages E F and B C, as and for the purpose vhereinbeforespecified.

2. In an air-tuyere, lthe combination of an air-box, D, constructedsubstantially as shown, having uponv the side thereof an inlet-pipe, G,

and upon the front side a door, H, the top of 3o i said air-box beingprovided with outlet-pipes E F, connecting with openingsB C, formed inthe face-plate A, said faceplate resting upon the top of pipes E F,thereby forming an a'nnular space or airchamber, c, between the top ofair-box D and said face-plate A, as and for the purpose hereindescribed.

3. In combination with an air-box, D, the regulating-plate I, providedwith 'lugs M, a large center opening, J, four smaller openings, l, andtwo elongated openings, L, so constructed as that any or all of saidopenings may be connected with those in top of air-box D, when desired,by rotating said regulator I, held in position and supported by lever O,substan- 45 tially as and for the purpose herein described and setforth.

N. O. SWENSON.

Vitnesses:

F. MpTHURsToN, N. IVYLAND.

